Spinning frame



C. MORTON March 8 1927.

SBINNI NG FRAME Filed June 15. 1926 2 Sheets-Sheetl INVENTOR. ow/l d .fl/Z/fZ/Z 1927. March 8 c. MORTON SPINNING FRAME Filed June 15. 1926 2 Sheets-SheetB I I N V EN TOR. ['0/'/J' J//V/Z,

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Patented Mar. 8, 1927.

UNITED STATES PATENT OFFICEi CHARLES MORTON, F PAWTUCKET, RHODE ISLAND.

SPINNING FRAME.

Application filed June 15,

. object to provide means whereby draft rolls may be employed of asize smaller than those ordinarily employed in machines of this character, whereby the rolls may be set more closely together to materially reduce the distance between the centers or nips of the back and front rolls and to also provide a simple and practical drive for these closely set rolls whereby an increased draft on the roving may be obtained and a relatively coarse rov ing used and drawn down to a relatively fine yarn and at the same time produce a yarn product of uniform size and quality.

With these and other objects in view, the invention consists of'certain novel features of construction, as will be more fully described, and particularly pointed out in the appended claims.

In the accompanying drawings:

Figure 1 is a side elevation showing the draft rolls in section and the arrangement of frictional drive for the intermediate rolls and gearing for the whole drive.

Figure 2 is a top view illustrating the general arrangement of the rolls and the gearing for driving the same at the head end of the machine.

Figure 3 is a detail showing the general arrangement ofthe rolls in section and showing the pair of intermediate rolls as frictionally driven by a drive roll located below them. I

Figure 4 is a diagrammatic view illustrating the general arrangement of the driving gears and the intermediate rolls as being frictionally driven bya third roll.

It is found in the operation of ordinary spinning frames of this character, necessary to set the draft rolls relatively wide apart to be able to mount the driving gears on the ends thereof of sufiicient size and strength to operate the roll in, a practical way and by this construction the distance between the centers or nips of the back and front rolls must necessarily be so great as to materially -limit the amount of draft on the roving thereby necessitating the use of relatively fine hanks or roving to prevent breaking down during a drawing operation or forming thick and thin places in the yarn, which renders the yarn ununiform and unsatisfactory. The above difficulties have been overcome in a practical way by the use of my improved 1926. Serial no. 116,116.

arrangement of mechanism which permits the use of draft rolls of a relatively smaller diameter than could heretofore be used and permits these rolls to be run very closely together and so reduce the distance between the nips or centers thereof to the very minimum.

By this construction, I am permitted to employ a greatly increased draft on the roving between the back and front rolls and consequently I am enabled to use a relatively coarse hank roving. The intermediate rolls serving as a support for the roving during a the drawing operation to prevent the samefrom breaking down thereby permitting a fine yarn of uniform size and quality to be obtained from a relatively coarse roving and eliminating the use of the finer hank roving,

thereby reducing the cost of preparing the roving, which reduction in some cases reaches as high as twenty percent. In order to overcome the difficulty of driving the closely set rolls from the head end of a machine, I have positioned a third roll beneath the intermediate rolls and of a sufficient distance from the back rolls to permit it to be geared directly thereto, and I employ this third roll to drivexthese intermediate rolls by friction, and the following is a detailed description of the present embodiment of my invention and showing one arrangement of rolls and drving mechanisms whereby these advantageous results may be ob-' tained o With reference to the drawings, 10 and. 11

' designate the bottom and top front rolls and 12 and 13 the bottom and top back rolls. Intermediate these two sets of rolls the intermediate rolls 14 and 15 are set, both of which arepreferably of relatively small size and are preferably covered with leather,

these small intermediate rolls permitting the back and front rolls to be set much closer feature of my present invention is drive roll 16 and locating the same below this pair of intermediate rolls, the surfaces of this drive roll being preferably corrugated like the lower rolls 10 and 12 and arranged to press against the leather cover-- ing of roll 15, to rotate the same. a

In order to drive this roll 16, I preferably mount a gear 17 on the back roll 12 to mesh directly with the gear 18 on this drive roll 16, whereby this drive roll is caused to rotate in a direction opposite to that of the roll 12, its surface thus coming in contact with the roll 15 causes the latter to rotate .shaft I mount a pinion 25 which meshes with the larger ear 26, this gear being mounted on the ack shaft 27 and is arranged to drive the back roll through pinions 28 and 29.

'By this arrangement of mounting the drive roll 16 below the intermediate draft I rolls 14 and 15, I am enabled to position the drive roll between the. back roll and the intermediate roll and space the same sufliciently to permit the use of gears 17. and 18 of a size to well perform this driving function and at the same time I am enabled to place the front and back draft rolls sulficiently close together to obtain the desire short distance between their nips.

When it is desired to change the speed of the back roll relative to that of the front roll, it is only necessary to change the size of pinion 25, which can be done by swinging'the bracket arm 24 on its bearing 21 into position to cause the fresh pinion to again properly mesh with the gear 26 and it will be seen by this arrangement that any relative change in speeds of the back roll will also make a corresponding change of speed in the intermediate rolls 14 and 15.

By this construction and arrangement of gearing, it is obvious that I may reduce the distance between the nips of the front and back rolls 10 and 12 to-the very minimum and use the middle rolls as a carrier only,

' if desired. In other words, by having the rolls widely spaced a relatively fine hank roving must be employed to produce a yarn. of a given size and quality, but by reducing the space between the nip of the rolls, a

greater draft may be employed without breaking down the roving and 1 am thus en abled to reduce the same quality and size of yarn rom a much coarser hank roving thus eliminating one distinct step in opera- 1 tion which has heretofore been necessary to reduce the roving from the coarse hank to the fine hank size in order to obtain a satisfactory even yarn, .by which arrangement I obtain a material savingin the cost of yarn roduction which in some cases'figures' as hig as twenty per cent.

roll driving mechanism as applied to a spinning frame, but it is understood that the same may be employed if desired on any other machine having rolls employed in the drafting of textile fibers.

The foregoing description is directed solely towards the construction illustrated, but I desire it to be understood that I reserve the privilege of resorting to all the mechanical changes to which the device is susceptible,

the invention being defined and limited only by the terms of ,the appended claims.

I claim:

1. In-a spinning frame, front and back only, and gears for driving said friction roll.

3. In aspinning frame, front and back draft rolls, gears for positively driving said sets of rolls at different predetermined speeds, a set of carrier rolls intermediate said front and back rolls, a roll having a friction driving surface set to engage and drive only said intermediate-rolls, said friction. drive rolls being geared to said back rolls.

4. In a spinning frame, front and back draft rolls, gears for driving said sets at different predetermined speeds, a set of carrier rolls intermediate said front and back rolls, a corrugated roll geared to one of said back rolls and set below said intermediate rolls and having an extended enga ing surface arranged to act upon and frictionally'drive said intermediate .rolls' at a surface speed greater than" that of the back rolls. 7

5. In a spinning frame, front and back draft rolls, gears for driving said rolls at a predetermined ratio, a 'set ofint'ermediate rolls set with their fiber-engaging surfaces adjacent both said back and front rolls and a gear driven friction drive roll below said intermediate rolls for driving said rolls in a direction to' advance the roving.

6. In a spinning frame front and back sets of draft rolls, means fordriving said sets at different relative speeds,- a set of'intermediate rolls between said sets of back and front rolls andv positioned withitheir working surfaces to run' just clear of those of said back v and front sets of rolls, and a draft roll'po- V sitioned to frictionally engage and drive said intermediate set of rolls.

. I have shown and described my improved 7. In aspinning frame front and back sets 39 of draft rolls, means for driving said sets at different relative speeds, a set of intermediate rolls between said sets of back and front rolls and positioned with their working surfaces to run just clear of those of said back and front sets of rolls, and a gear driven roll arranged to engage and drive said intermediate set of rolls by friction.

8. In a s inning frame front and back sets of draft ro 1s, means for driving said sets at different relative speeds, a set of intermediate rolls spaced substantinally equally distant between said back and front rolls, said sets of rolls being so positioned relative to each other that their working surfaces run just clear of each other, and a drive roll positioned to frictionally engage and drive said intermediate set of rolls.

9. Ina spinning frame front and back sets of draft rolls, means for driving said sets'at different relative speeds, a set of intermediate rolls spaced substantially equally distant between said back and front rolls, said sets of rolls being so positioned relative to each other that their Working surfaces run just clear of each other, and a roll arranged to drive said intermediate set and said drive roll being geared to said back rolls.

In testimony whereof I aflix my signature.

CHARLES MORTON. 

